Coffee! The engineer’s extra assistant. It’s been in the studios for decades and thankfully now days it’s usually pretty decent. Back when I started (pre Starbucks...yes, I’m that old) good studio coffee was a rarity. (Think of a shabby office coffeemaker, styrofoam cups and powdered creamer) But we’d still drink that mud in the late hours to help us keep going.
One thing I’ve found that at a certain point there’s a kind of caffeine saturation. Especially in hours after midnight when I’ve had a few cups the coffee doesn’t help me wake up...it just begins to bother my stomach.
I’ll usually turn to a Diet Pepsi for those hours. The carbonation wakes me up pretty well on it’s own, and the caffeine is somehow different and I don’t need the sugar. Of course other kinds of drinks can do the same thing. Any sparkling drink would have a similar effect. I’ve tried the Five Hour energy drinks. They seem to work also, but I really wonder what’s in it!